Carriage-return mechanism.



W. AMMERMAN.

CARRIAGE RETURN MECHANISM.

APPLICATION FILED JAN.18, 1913.

1,082,063. Patented Dec. 23, 1913.

3 SHEETS-SHEET 1.

. v ----L n ji g. v3 M 42 Q? 0 L0 WITNESSES INVENTOR WP: Q M/SLey ATWTIEYITLCUL Van/p6 s Anam 5.56 'il 24 I y I V Z6 f g 9! /1 We shay Amway-rm ix /1110mm Patented Dec. 23, 1913.

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W. AMMERMAN. CARRIAGE RETURN MECHANISM.

APPLIGATION FILED JAN. 18. 1913.

1,082,063. Patented Dec. 23, 1913.

3 BHBETS SHEET 3.

WITNESSES //v VENTOR ATENT OFFTCE.

WESLEY AMMERMAN, OF FRANKLIN, TENNESSEE, ASSIGNOR OF ONE-HALF T0 TYLER BERRY, 013 FRANKLIN, TENNESSEE.

CARBIAGERETURN MEGHAN ISM.

Specification of Letters Patent.

Patented Dec. 23, 1913.

Application filed January 18, 1913. Serial No. 742,904.

mechanism for typewriters, and has for its object the production of means for facilitating the returning of the carriage to its correct position and at the same time accom lishing the desired line spacing.

ith the above and other objects in view, this invention consists of certain novel constructions, combinations and arrangements of parts, as will be hereinafter fully described and claimed.

In the drawings, Figure l is a front view of a typewriting machine showing the manner in which the attachment is connected thereto wherein the line spacing is placed upon the right of the carriage. The machine illustrated in Fig. 1 is a machine of the Remington type. Fig. 2 is an end view of the machine showin the return mechanism secured thereto. Fig. 3 is a diagrammatic View showing the arrangement of the electric circuits employed in connection with the automatic return mechanism for the carriage. Fig. 4 is a longitudinal section through a ortion of the winding mechanism for t e carriage return mechanism. Fi 5 is a side view of the pinion carrying dis employed in connection with the carriage return mechanism showing the manner in which the electro-magnets engage the pinion carrying disk. Fig. 6 is a section taken on line 66 of Fig. 1. 'Fig. 7 is a detail perspective of the type indicating member showing the circuit closing device socured thereto. Fig. 8 is an end view of the cord winding drum. Fig. 9 is a front view of the .device as appliedto a typewriter of the Underwood type wherein the spacing lever is placed to the left of the mr chine. Fig. 10 is a section taken on line 10-10 of 9. Fig. 11 is a sectional view through" the machine which carries the usual carriage 2, and this carriage has the usual line spacing lever 3 upon which arm is formed an integral upwardly extending finger 4. Aguiding pulley 5 is carried by the opposite end of the carriage 2 and a second guiding pulley 6 is carried upon the lower face of the darriage 2. A third guiding pulley 7 is carried upon the frame 1 and over these pulleys 5, 6 and 7 passes the winding cable 8.. This winding cable has its outer end secured to the integral upwardly extending finger 4 and it will be seen that as the drum 9 over which the cable 8 is winding, rotates, the lever 4 will be thrown to the position as shown in dotted lines in Fig. 1 thereby causing the platen roller to rotate to accomplish the desired line spacing. When, however, the cable 8 continues to wind, the carriage 2 will be returned to its normal position upon the machine and ready for writing the next line.

A contact lug 10 is carried by the indicating member or clip 11 and this indicating member 11 is provided near its top with a squared aperture 12 through which the sliding contact member 13 works. The sliding contact member 13 is provided with an env larged head 14 which limits the sliding movement of the contact member 13 in one direction. The opposite end of the contact member 13 is bent so as to constitute a substantially U-shapcd outer end 15, and the extreme finger portion 16 of the U-shapecl end 15 is adapted to contact with the contact member 10 and thereby close an electric circuit through the electrical connection to be hereinafter described. The usual stops 17 are carried by the movable carriage 2, and these stops engage the contact rmber 13 so as to throw the same into and out of engagement with the contact member 10. It will be seen that as the carriage travels toward the left and reaches the end of the line, the stop will engage the Ushaped end 15 and cause the circuit to close between the finger 16 and the contact member 10. As the carriage is returned to its normal osition the stop 17 at the opposite end 0 the carriage will engage the enlarged head 14 and open the circuit between the contact member 10 and the end 16 by driving the contact member 13 out of engagement with the contact member 10. It should be understood that the construction of the machine is not altered in any particular in connection with the present device with the exception of -forming the arm 4: upon the line spacing lever 3,'and connecting the pulleys 5, 6 and 7 thereto.

A-motor containing casing 18 is carried to one side of the body 1 of the machine and within this casing is carried a plurality of supporting legs 19. A motor 20 is also car- :ried within the casing and carries a gear 21 loosely mounted the beveled gears 24= and these gears are held in their correct p0s1t1on I by means of retaining pins 28 as indicated in dotted lines in Fig. 5. A drum 29 is mounted upon the shaft 26 and carries a plurality of flanges 30 and 31 which limit the movement of the winding cable 8 upon the drum. A. miter gear 32 is formed upon the inner end of the drum 29 and meshes with the pinions 24: as indicated clearly in Fig. 2. The casing 18 may be secured to the body 1 by means of the laterally extending cars 33 or any other desired securing means. An electro-magnet supporting yoke 34 is carried within the casing 18 and through this supporting yoke 34 is positioned the electromagnets 35. These electro-magnets 35 are supported upon the cushion support 36 which cushion support is held in its correct position by means of the supporting pins 37 which supporting pins carry the tension spring 38 for constituting a tension or yieldable support for the electro-magnets 35. The electro-magnets 35 are provided -with the magnetic shoes 39 having neckportions 40 which extend into the electro-magnets 35. These shoes 39 are so formed as to partially encircle a portion of the edge of the disk 25 so as to anchor the same in a set position when the electro-magnets 35 are energized.

As illustrated in Fig. 3, the device may be wired so as to constitute a primary and an auxiliary circuit. The primary circuit comprises a leading wire all leading from the contact point 10 to a battery l2 and from there to the motor 20. The return is made through the return wire &3 to the contact member 13. The auxiliary circuit comprises a lead wire ll leading from the contact point 10 to the battery 45 and from thereto the electro-magnets 35. The return wire :6 is connected to the electr c-magnets and to the contact point 13. It will, t erei ormbe seen that as the contact member 13 comes in engagement wit]. the contact point 10, the curaoeaoea rent will pass through the motor 20., at the same time energizing the magnets 35 and the shoes 39 so as to anchor the disk 25in a set position. it will, therefore, be seen that as the motor 20 continues to rotate a rotary motion will be imparted to the drum 29,- thereby winding the cord or cable 8 upon the drum and drawing the carriage to its normal position. As stated above, prior to the drawing of the carriage the platen roller will be rotatedto the desired position to obtain the necessary line spacing.

From the foregoing description, it will-be seen that a very simple and efiicient electromagnetic means has been produced for causing the carriage to return to its normal position after one line has been completed, thereby'doing away with the necessity of employing an extra key upon the machine for making the operator return the carriage manually.

As illustrated in Figs. 9 and 10, the device may be applied to any form of machine, and attention is' especially directed to Fig. 9 in connection therewith. The winding cable 8 as illustrated in Fig. 9, is connected at its outer end to the platen roller operating lever a? thereby causing said lever to rotate the platen when the cable 8 begins to wind upon the winding drum. The carriage will then return to its normal position. by constantly pulling upon the cable 8 by the winding drum. As illustrated in Fig. 10, the contact member 13' is carried by the ordinary projecting finger 48 of the indi- 100 eating block 4:9, and a contact member 50 is also carried by the body of the machine so as to come in contact with the sliding contact member 13 similar to that as illustrated in Fig. 7.. (it course, it should be understood 105 that the machine is provided with the usual stop blocks 51 which are common to the machine ol? the Underwood type and other standard machines, so as to throw the contact member to the desired position.- we

it should, of course, be understood, as illustrated in Fig. 11, that the sliding contact member 13 is insulated from the support as indicated at 18'.

The dish 25 is provided until an outer rim its 25 -for connecting with the electro-maguet. This rim 25 is insulated from the remainder of the wheel by means of an insulating I band 26;

Having thus described the invention, what we is claimed as new, is

In a machine of the class described the combination with a body provided with a sliding carriage, of a stationary contact member carried by said body, a slidin com 125 tact member carried by said body, said slid-- in contact member comprising an outer su stantially tl-shaped end, an enlarged head'carried by the outer end and said olshaped and provided with an extending 211- 13a tro-ma ger adapted to contact with said stationary contact member, and electrical means forreturning said carriage to its normal position when said contact members engage each other.'

2. A device for returning a carriage of a typewriter to its normal position after the same has reached a predetermined point comprising a motor, a drum, a driving gear cooperating with said motor, a pinion carrying disk interposed between said driving gear and said drum, pinions carried by said pinion driving disk, and electro-magnetic means cooperating with said pinion carryin disk for anchoring the same as soon as said motor is actuated.

3L A device of the class described comprising a motor, a drive gear, a drum, a shaft supporting said drive gear and drum, a pinion carrying disk interposed between said drive gear and drum and bein keyed to said shaft, pinions carried by sai disk, electro-magnets positioned 'below said disk, means for electrically connecting said elecets with a source of electrical supply, said motor also being connected with said source of electrical supply for causing said magnets to be energized simultaneously with the driving of said motor, said pinions adapted to transmit motion from said drive gear to said drum, and said cable passing over said drum for winding said cable upon said drum as the same is rotated.

4. A device of the class described comprising a drive gear, a drum, 'a supporting shaft, a pinion carrylng disk interposed between said drive ear and drum and bein keyed to said sha t, pinions carried by sai disk, magnetic means positioned below said ably disk, means for supplying an electro current to said magnetic means for energizing said magnetic means, and said pinions adapted to transmit motion from said drive gear to said drum.

5. A contact device for closing an electric circuit for an electric carriage return mechanism comprising a bracket provided with a depending contact member, a slidably mounted contact member insulated upon said bracket and adapted to be moved transversely of said bracket for closing and opening an electric circuit with said first mentioned contact member, and means for engaging said slidably mounted contact member for moving the same upon said bracket.

6. A circuit closing contact member for an electrical return mechanism for a typewriter comprising a bracket adapted to be carried by a carriage of the typewriter, said bracket provided with an insulated aperture, a substantially U-shaped contact member slidably mounted in said insulated aperture and provided with an enlarged head for limiting the sliding movement of said Slldmounted contact member in said bracket, a contact member depending from said bracket and adapted to engage said slidable U-shape contact member for closing the circuit therethrough, and means for electrically connecting said contact members with the source of electrical supplies.

In testimony whereof Ihere unto aflix my signature in presence of two wltnesses.

WESLEY AMMERMAN.

\Vitncsses J. W. NEAL, WALTER L. BERRY. 

